
| APR | MAY | JUN | JUL | AUG | SEP | |||||||||||||||||||||
| Week no. | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 |
| Site | ||||||||||||||||||||||||||
| Small Skipper | . | . | . | . | . | . | . | 6 | 4 | 12 | 4 | . | . | . | 1 | . | . | |||||||||
| Large Skipper | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | |||||||||
| Brimstone | . | . | . | . | . | . | . | . | . | . | 1 | 6 | 4 | 5 | 2 | . | . | |||||||||
| Large White | . | . | . | . | 5 | 3 | . | . | . | 5 | . | 3 | 1 | 5 | . | . | . | |||||||||
| Small White | . | 1 | 1 | . | . | . | 6 | 1 | 1 | . | 3 | . | 1 | 5 | 1 | 5 | . | |||||||||
| Green-veined White | . | . | 1 | 2 | 2 | . | . | . | . | 2 | 1 | 3 | 1 | 9 | 5 | 1 | . | |||||||||
| Orange Tip | . | . | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Small Copper | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | 3 | 2 | . | |||||||||
| Small Blue | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Silver-studded Blue | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | |||||||||
| Common Blue | . | . | . | 2 | 10 | 11 | 4 | 1 | 1 | . | 2 | 7 | 9 | 51 | 38 | 24 | 1 | |||||||||
| Red Admiral | . | . | . | . | . | 1 | . | . | 1 | 1 | . | . | . | . | . | . | . | |||||||||
| Small Tortoiseshell | 1 | . | . | 1 | . | . | 3 | 1 | 1 | . | . | . | . | 1 | . | 3 | . | |||||||||
| Peacock | 2 | . | . | . | . | . | . | . | . | . | . | 4 | 6 | 2 | . | . | 1 | |||||||||
| Dark Green Fritillary | . | . | . | . | . | . | 6 | 5 | 4 | 1 | 1 | . | . | . | . | . | . | |||||||||
| Silver-washed Fritillary | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | |||||||||
| Speckled Wood | . | 1 | . | . | 1 | 1 | 1 | 1 | 1 | . | 1 | . | 1 | 7 | 8 | 25 | 5 | |||||||||
| Wall Brown | . | . | . | 2 | . | . | . | . | . | . | . | . | 2 | . | 2 | . | . | |||||||||
| Grayling | . | . | . | . | . | . | . | . | 2 | 22 | 26 | 6 | 5 | 3 | 3 | . | . | |||||||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | 12 | 20 | 20 | 55 | 36 | 17 | 4 | . | |||||||||
| Meadow Brown | . | . | . | . | . | 1 | 3 | 5 | 23 | 49 | 117 | 90 | 128 | 97 | 91 | 45 | 4 | |||||||||
| Small Heath | . | . | . | 2 | 8 | 4 | 6 | 4 | . | . | . | . | . | . | . | . | . | |||||||||
| Ringlet | . | . | . | . | . | 3 | 3 | 10 | 3 | . | . | . | . | . | . | . | . | |||||||||